If you really want to mine, you have to pay attention to several important aspects that are very necessary in order to get profits later, because there are also some people who do mining that don't get maximum results, not even a little bit. if mining aims at Bitcoin we recommend you to use ASIC, but it requires costs and also electricity, high or low electricity costs will be a factor of your profits later, note that electricity costs in your place are relatively low or high.
Can I start with my smartphone?
Mining with mobile phones or GPUs and even CPUs actually can, but we feel this is not efficient if the CPU/GPU is in small quantities, although some use it but they combine CPU/GPU devices in the form of Rig Mining, and this is in larger quantities (not one or two ), and the use of Rig Mining is more often used to mine Ethereum-like coins, for Bitcoin actually there is but rarely, because they are much better off using ASIC.